2006-09-22 00:22:34 +08:00
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"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
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:link(lws,http://lammps.sandia.gov)
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:link(ld,Manual.html)
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:link(lc,Section_commands.html#comm)
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:line
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timestep command :h3
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[Syntax:]
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timestep dt :pre
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dt = timestep size (time units) :ul
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[Examples:]
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timestep 2.0
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timestep 0.003 :pre
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[Description:]
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Set the timestep size for subsequent molecular dynamics simulations.
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2015-10-24 03:59:37 +08:00
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See the "units"_units.html command for the time units associated with
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each choice of units that LAMMPS supports.
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2015-10-24 03:50:02 +08:00
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The default value for the timestep size also depends on the choice of
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units for the simulation; see the default values below.
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2006-09-22 00:22:34 +08:00
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2007-10-11 06:28:11 +08:00
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When the "run style"_run_style.html is {respa}, dt is the timestep for
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the outer loop (largest) timestep.
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2006-09-22 00:22:34 +08:00
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[Restrictions:] none
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[Related commands:]
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2007-10-11 07:47:26 +08:00
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"fix dt/reset"_fix_dt_reset.html, "run"_run.html,
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"run_style"_run_style.html respa, "units"_units.html
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2006-09-22 00:22:34 +08:00
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[Default:]
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2015-10-24 03:59:37 +08:00
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choice of "units"_units.html : time units : default timestep size
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lj : tau : 0.005 tau
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real : fmsec : 1.0 fmsec
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metal : psec : 0.001 psec
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si : sec : 1.0e-8 sec (10 nsec)
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cgs : sec : 1.0e-8 sec (10 nsec)
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electron : fmsec : 0.001 fmsec
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micro : usec : 2.0 usec
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nano : nsec : 0.00045 nsec :tb(s=:,a=l,ea=c)
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